diff --git a/src/osgPlugins/gles/SubGeometry b/src/osgPlugins/gles/SubGeometry
index 41b1d0129..b189f3eb4 100644
--- a/src/osgPlugins/gles/SubGeometry
+++ b/src/osgPlugins/gles/SubGeometry
@@ -161,9 +161,8 @@ protected:
     }
 
     inline osg::Array* makeVertexBuffer(const osg::Array* array, bool copyUserData=true) {
-        osg::Array* buffer = 0;
-        if(array) {
-            buffer = dynamic_cast<osg::Array*>(array->cloneType());
+        osg::Array* buffer = array ? osg::cloneType(array) : 0;
+        if(buffer) {
             buffer->setBinding(osg::Array::BIND_PER_VERTEX);
             if(copyUserData && array->getUserDataContainer()) {
                 buffer->setUserDataContainer(osg::clone(array->getUserDataContainer(), osg::CopyOp::DEEP_COPY_ALL));